备份命令
# tar cvpjf backup.tar.bz2 –exclude=/proc –exclude=/lost+found –exclude=/backup.tar.bz2 –exclude=/mnt –exclude=/sys /
参考网址
http://www.cnblogs.com/samael/articles/2033568.html
http://www.lh126.net/article-view-235.html
原文：http://www.cnblogs.com/pingandezhufu/p/5273874.html